The Big Review: Boss RE-202 Space Echo – Bigger is better with this amped-up tape-delay unit
Guitar Pedal X - GPX Blog - As the Last of the Boss 20-Series Pedals start to bow out - how many of those will we see transition to 200-Series Equivalents?
Boss CE-20 Chorus Ensemble Pedal - Guitar Lessons
BOSS ME-80 Guitar Multiple Effects Review - The Blogging Musician
Boss CE-20 Chorus Ensemble - ranked #42 in Chorus Effects Pedals | Equipboard
Amazon.com: Boss DD-20 Giga Delay Guitar Pedal : Musical Instruments